While the new Aadhaar app primarily focuses on providing Aadhaar-related services, such as downloading and sharing their digital ID, adding a biometric lock, updating mobile number and address, or even reviewing a request from a member of the family. But that’s not all. It also lets users share their contact information as an easy-to-use QR code.While the new Aadhaar app primarily focuses on providing Aadhaar-related services, such as downloading and sharing their digital ID, adding a biometric lock, updating mobile number and address, or even reviewing a request from a member of the family. But that’s not all. It also lets users share their contact information as an easy-to-use QR code.